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Hail is falling on the roof of a car at a mass rate ofm/t = 0.070kg/s and an inital velocity of v0 = -10m/s and strikes the roof perpendicularly. Suppose that the hailbounces off the roof of the car with a velocity of +15 m/s. Calculate the force exerted by the hail on the roof.
Scientist calls a theory that unites many ideas in a simple way "beautiful." Are unity and simplicity among the criteria of beauty outside of science? Help support the answer.
How much charge can be placed on a capacitor with air between the plates before it breaks down if the area of each plate is 9.00 cm2
A solid metal sphere of radius a = 1.30 cm is surrounded by a concentric spherical metal shell of inner radius b = 1.90 cm and outer radius c = 2.40 cm. What is the surface charge density, sc, on the outer surface of the outer spherical conductor
A woman walks 300m in the direction 30° east of north, then 300 m directly east.
A single slit has a width of 2.1x10^(-6)m and is used to form the diffraction pattern. Find out the angle that locates the second second dark fringe when the wavelength of the light is 430 nm.
A total Charge of 0.696uC is distributed uniformly throughout an entire region, giving a charge per volume of 348uC/m3. A Gaussian surface encloses 0.174uC of that charge. What is the volume of that entire region?
Three capacitors are connected in parallel. Each has plate area A = 1.00×10-2 m2 and plate spacing d = 9.00×10-4 m. What must be the spacing of a single capacitor of plate area A if its capacitance equals that of the parallel combination?
A 4.15 volt battery is connected across a parallel plate capacitor. Find the speed of the electrons when they reach the positive plate
An amusement park ride consists of a swing hanging from a chain attached to a spinning mechanism. The swing forms a horizontal circle of a radius 5.0 m and the chain makes an angle of 25 degrees from vertical as shown in the diagram. If the mass of t..
A sealed closed tube length=1.5 m of unknown gas, frequency = 210 Hz. what is the speed of sound in that gas
A piano tuner stretches a steel piano wire with a tension of 1040N . The wire is 0.400m long and has a mass of 3.90g. What is the frequency of its fundamental mode of vibration
When the Sun is directly overhead, a hawk dives toward the ground with a constant velocity of 5.30 m/s at 68.5° below the horizontal
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